XP Priority

I often re-install my OS because of one or other problems, and these are the softwares (of course after installing all the drivers and Windows auto updates) which become my 1st priority to be installed in order for me to be able to use the OS better.
* Again, this is according to my needs

Multimedia

• [Free] XP Codec Pack 2.3.4
• [Free] Movie Player VLC
• [Free] Music Player, iTunes

Internet

• [Free] Browser Mozilla Firefox
  
• [Free] Chatting Application, Yahoo & MSN, my favorite ^^
• [Trial] Download Manager Internet Download Manager

System & Security

• [Trial] WinRAR
  
• [Trial] AntiVirus Application, NOD32, my favorite ^^
• [Free] TweakUI

Productivity

• [Trial] Microsoft Office 2007
  

These are the programs, feel free to comment if you have anything other then the above, that you might think it is important.